WO2008070804A2 - Grouped leads for spinal stimulation - Google Patents
Grouped leads for spinal stimulation Download PDFInfo
- Publication number
- WO2008070804A2 WO2008070804A2 PCT/US2007/086693 US2007086693W WO2008070804A2 WO 2008070804 A2 WO2008070804 A2 WO 2008070804A2 US 2007086693 W US2007086693 W US 2007086693W WO 2008070804 A2 WO2008070804 A2 WO 2008070804A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dorsal root
- lead
- electrodes
- tubular body
- inner structure
- Prior art date
Links
- 230000000638 stimulation Effects 0.000 title claims description 51
- 210000003594 spinal ganglia Anatomy 0.000 claims abstract description 72
- 238000000034 method Methods 0.000 claims abstract description 29
- 210000005036 nerve Anatomy 0.000 claims abstract description 13
- 230000004936 stimulating effect Effects 0.000 claims abstract description 10
- 230000005641 tunneling Effects 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 2
- 210000000278 spinal cord Anatomy 0.000 abstract description 31
- 210000003484 anatomy Anatomy 0.000 abstract description 9
- 210000000273 spinal nerve root Anatomy 0.000 abstract description 9
- 210000001519 tissue Anatomy 0.000 description 18
- 208000002193 Pain Diseases 0.000 description 8
- 230000036407 pain Effects 0.000 description 8
- 208000035824 paresthesia Diseases 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 210000004126 nerve fiber Anatomy 0.000 description 3
- 241001269524 Dura Species 0.000 description 2
- 210000001175 cerebrospinal fluid Anatomy 0.000 description 2
- 230000002939 deleterious effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000001537 neural effect Effects 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- 230000001953 sensory effect Effects 0.000 description 2
- 206010001497 Agitation Diseases 0.000 description 1
- 208000008035 Back Pain Diseases 0.000 description 1
- 206010033425 Pain in extremity Diseases 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002690 local anesthesia Methods 0.000 description 1
- PWPJGUXAGUPAHP-UHFFFAOYSA-N lufenuron Chemical compound C1=C(Cl)C(OC(F)(F)C(C(F)(F)F)F)=CC(Cl)=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F PWPJGUXAGUPAHP-UHFFFAOYSA-N 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000000944 nerve tissue Anatomy 0.000 description 1
- 210000000118 neural pathway Anatomy 0.000 description 1
- 230000010004 neural pathway Effects 0.000 description 1
- 231100000862 numbness Toxicity 0.000 description 1
- 210000000578 peripheral nerve Anatomy 0.000 description 1
- 210000003446 pia mater Anatomy 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
- A61N1/0551—Spinal or peripheral nerve electrodes
- A61N1/0553—Paddle shaped electrodes, e.g. for laminotomy
Definitions
- spinal cord stimulation spinal cord stimulation
- FIGs. 1A-1B illustrate conventional placement of an SCS system 10.
- Conventional SCS systems include an implantable power source or implantable pulse generator (IPG) 12 and an implantable lead 14.
- IPGs 12 are similar in size and weight to pacemakers and are typically implanted in the buttocks of a patient P.
- the lead 14 is implanted into the epidural space E of the spinal column and positioned against the dura layer D of the spinal cord S, as illustrated in Fig. IB.
- the lead 14 is implanted either through the skin via an epidural needle (for percutaneous leads) or directly and surgically through a mini laminotomy operation (for paddle leads).
- Fig. 2 illustrates example conventional paddle leads 16 and percutaneous leads 18.
- Paddle leads 16 typically have the form of a slab of silicon rubber having one or more electrodes 20 on its surface.
- Example dimensions of a paddle lead 16 is illustrated in Fig. 3.
- Percutaneous leads 18 typically have the form of a tube or rod having one or more electrodes 20 extending therearound.
- Example dimensions of a percutaneous lead 18 is illustrated in Fig. 4.
- Implantation of a percutaneous lead 18 typically involves an incision over the low back area (for control of back and leg pain) or over the upper back and neck area (for pain in the arms).
- An epidural needle is placed through the incision into the epidural space and the lead is advanced and steered over the spinal cord until it reaches the area of the spinal cord that, when electrically stimulated, produces a comfortable tingling sensation (paresthesia) that covers the patient's painful area.
- the lead is moved and turned on and off while the patient provides feedback about stimulation coverage. Because the patient participates in this operation and directs the operator to the correct area of the spinal cord, the procedure is performed with local anesthesia.
- Implantation of paddle leads 16 typically involves performing a mini laminotomy to implant the lead. An incision is made either slightly below or above the spinal cord segment to be stimulated. The epidural space is entered directly through the hole in the bone and a paddle lead 16 is placed over the area to stimulate the spinal cord. The target area for stimulation usually has been located before this procedure during a spinal cord stimulation trial with percutaneous leads 18.
- the lead 14 is positioned upon the spinal cord dura layer D so that the electrodes 20 stimulate a wide portion of the spinal cord and associated spinal nervous tissue.
- the spinal cord is a continuous body and three spinal levels of the spinal cord are illustrated.
- spinal levels are sub-sections of the spinal cord S depicting that portion where the dorsal root DR and ventral root VR join the spinal cord S.
- the peripheral nerve N divides into the dorsal root DR and the dorsal root ganglion DRG and the ventral nerve root VR each of which feed into the spinal cord S.
- An ascending pathway 17 is illustrated between level 2 and level 1 and a descending pathway 19 is illustrated from level 2 to level 3.
- Spinal levels can correspond to the veterbral levels of the spine commonly used to describe the vertebral bodies of the spine. For simplicity, each level illustrai.cs the nerves of only one side and a normal anatomical configuration would have similar nerves illustrated in the side of the spinal cord directly adjacent the lead.
- Motor spinal nervous tissue or nervous tissue from ventral nerve roots, transmits muscle/motor control signals.
- Sensory spinal nervous tissue, or nervous tissue from dorsal nerve roots transmit pain signals.
- Corresponding dorsal and ventral nerve roots depart the spinal cord "separately"; however, immediately thereafter, the nervous tissue of the dorsal and ventral nerve roots are mixed, or intertwined. Accordingly, electrical stimulation by the lead 14 often causes undesirable stimulation of the motor nerves in addition to the sensory spinal nervous tissue.
- non-specific stimulation refers to the fact that the stimulation energy is provided to all spinal levels including the nerves and the spinal cord generally and indiscriminately. Even if the epidural electrode is reduced in size to simply stimulate only one level, that electrode will apply stimulation energy indiscriminately to everything (i.e. all nerve fibers and other tissues) within the range of the applied energy. Moreover, larger epidural electrode arrays may alter cerebral spinal fluid flow thus further altering local neural excitability states.
- Another challenge confronting conventional neurostimulation systems is that since epidural electrodes must apply energy across a wide variety of tissues and fluids (i.e. CSF fluid amount varies along the spine as does pia mater thickness) the amount of stimulation energy needed to provide the desired amount of neurostimulation is difficult to precisely control. As such, increasing amounts of energy may be required to ensure sufficient stimulation energy reaches the desired stimulation area. However, as applied stimulation energy increases so too increases the likelihood of deleterious damage or stimulation of surrounding tissue, structures or neural pathways.
- the present invention provides devices, systems and methods for simultaneously stimulating the spinal anatomy at various target locations, such as spinal levels, along the spinal cord.
- the spinal cord is a continuous body and may be considered to include various spinal levels.
- a spinal level may be considered a sub-section of the spinal cord wherein a dorsal root and ventral root join the spinal cord.
- Spinal levels may also correspond to vertebral levels of the spine commonly used to describe the vertebral bodies of the spine.
- the target locations are stimulated individually, in contrast to conventional SCS leads which blanketly stimulate a wide area. This provides more effective treatment of pain symptoms and reduces deleterious side effects.
- the present invention provides devices, systems and methods for such targeted stimulation at various spinal levels. In addition, some embodiments provide additional specificity within each targeted level.
- the devices, systems and methods stimulate the various spinal levels at specific nerve anatomies, such as the dorsal root DR or more specifically the dorsal root ganglion DRG. Examples described herein will illustrate specific stimulation of the dorsal root ganglia of various levels, however the embodiments are not so limited.
- a method for stimulating a plurality of dorsal root ganglia comprises positioning a lead within an epidural space, wherein the lead has a longitudinal axis and at least two electrodes disposed along the longitudinal axis, aligning the lead so that each of the at least two electrodes is disposed within a distance of one of the plurality of dorsal root ganglia which allows selective stimulation thereto; and electrically energizing the lead so as to provide selective stimulation to at least one of the plurality of dorsal root ganglia.
- electrically energizing comprises electrically energizing the lead so as to provide selective stimulation to at least two dorsal root ganglia which are not adjacent to each other.
- the lead provides selective stimulation to at least two dorsal root ganglia which are adjacent to each other.
- Various combinations of dorsal root ganglions may be stimulated simultaneously or in any pattern.
- the at least two electrodes comprise a series of electrodes disposed along the longitudinal axis.
- electrically energizing the lead may comprise selectively energizing individual electrodes within the series of electrodes which are disposed within the distance which allows selective stimulation to the associated dorsal root ganglion. It may be appreciated that at least some distances between the individual electrodes may be irregular.
- a telescoping lead for stimulation of a nerve within tissue of a body.
- the telescoping lead comprises an elongate tubular body having a proximal end, a distal end, a lumen therethrough, and at least one electrode disposed thereon.
- the lead also includes an inner structure having a proximal end, a distal end, and at least one electrode disposed thereon, wherein the inner structure is advanceable through the lumen so that its distal end extends beyond the distal end of the elongate tubular body, and wherein the inner structure has a strength member extending between its proximal and distal ends so as to provide sufficient strength to allow tunneling of the lead through the tissue.
- the tubular body and inner structure may have a variety of cross-sectional shapes.
- the inner structure is shaped to resist rotation within the lumen.
- the tubular body may be shaped to resist rotation around the inner structure.
- the tubular body has an oval or oblong shaped lumen.
- the at least one electrodes are substantially longitudinally aligned. However, some electrodes may be adjacent to each other or longitudually offset from each other. Optionally, the electrodes may be individually energizable.
- the inner structure is sized for advancement through a foramen.
- the tubular body would likewise be sized for such advancement.
- the telescoping lead further comprises an additional elongate tubular body having a proximal end, a distal end, a lumen therethrough, and at least one electrode disposed thereon.
- the additional elongate tubular body is configured to be advanceable through the lumen of the elongate tubular body and the inner structure is advanceable through the lumen of the additional elongate tubular body.
- the at least one electrodes are substantially longitudinally aligned.
- the elongate tubular body and inner structure may be positionable so that the at least one electrode on the elongate tubular body aligns with a first dorsal root ganglion while the at least one electrode on the inner structure aligns with a second dorsal root ganglion.
- the elongate tubular body and inner structure are positionable so that the at least one electrode on the elongate tubular body aligns with a first portion of a dorsal root ganglion while the at least one electrode on the inner structure aligns with a second portion of the dorsal root ganglion.
- a method for stimulating at least one dorsal root ganglion comprises advancing a telescoping lead toward a dorsal root ganglion, wherein the telescoping lead comprises an elongate tubular body having a proximal end, distal end, a lumen therethrough and at least one electrode disposed thereon, and an inner structure having at least one electrode disposed thereon, wherein the inner structure is advanceable through the lumen so that its distal end extends beyond the distal end of the elongate tubular body.
- the method further comprises positioning at least one of the at least one electrodes near the dorsal root ganglion so as to apply stimulation to the dorsal root ganglion.
- advancing the telescoping lead comprises advancing the telescoping lead at least partially through a foramen.
- Advancing the telescoping lead may optionally comprise laterally approaching the dorsal root ganglion from outside of a spinal column.
- advancing the telescoping lead may comprise advancing the telescoping lead through an epidural space.
- positioning comprises advancing or retracting the inner structure to position at least one of the at least one electrodes disposed on the inner structure near the dorsal root ganglion.
- positioning comprises advancing the inner structure so as to position at least one of the at least one electrodes disposed on the inner structure near the dorsal root ganglion and at least one of the at least one electrodes disposed on the tubular body near another dorsal root ganglion.
- the dorsal root ganglion and other dorsal root ganglion may be on adjacent spinal levels. However, it may be appreciated that the dorsal root ganglion and other dorsal root ganglion may not be on adjacent spinal levels.
- Fig. 1 A-IB, 2, 3, 4, 5 illustrate prior art.
- Fig.6 illustrates positioning of a device of the present invention so as to optionally simultaneously stimulate various levels of the spinal cord.
- Fig. 7 illustrates a device extending longitudinally through the foramens of each vertebrae.
- Fig. 8 is a cross-sectional view of the device of Fig. 7.
- Figs. 9A-9C illustrate embodiments of grouped lead devices that have electrodes at various spacings and/or allow adjustment of the spacing between the electrodes.
- Fig. 1 OA illustrates an embodiment of a grouped lead device comprising a telescoping shaft.
- Fig. 1OB is a cross-sectional view of the device of Fig. 1OA.
- Fig. 1OC is an alternative embodiment of the device of Fig. 1OA having a generally circular cross-section.
- Fig. 11 illustrates the telescoping shaft positioned so that the electrodes are near the DRGs.
- Fig. 12 illustrates the stimulation of an individual DRG with a device having a plurality of selectively utilizable electrodes.
- Fig. 13 illustrates the stimulation of an individual DRG with a device having a telescoping shaft.
- Fig. 6 illustrates positioning of an embodiment of a device 200 of the present invention so as to optionally simultaneously stimulate various levels (levels 1 , 2, 3 in this example) of the spinal cord S.
- the device 200 is shown positioned within an epidural space of the spinal column at a lateral distance from the midline M of the of the spinal column which aligns the device 200 with the dorsal root ganglions DRG 1, DRG 2, DRG 3.
- portions of the device 220 align with and may optionally contact the dorsal root ganglions DRG 1, DRG 2, DRG 3, as indicated by shading.
- These aligned portions provide targeted or selective stimulation of one or more of the dorsal root ganglions DRG 1, DRG 2, DRG 3 while avoiding or reducing stimulation to surrounding tissues, such as the ventral roots VRl, VR2, VR3.
- the device 200 is electrically connected to a power source or implantable pulse generator (IPG) 202, as shown, which is implanted in the body of the patient.
- IPG implantable pulse generator
- Fig. 6 illustrates antegrade positioning of the device 200, however a retrograde approach may also be used.
- the device 200 extends across multiple levels in the form of a grouped lead providing a single extension to the IPG 202, or any number of extensions which is less than the number of targeted levels.
- Fig. 7 provides a side view of the spinal cord S including the bony structures or vertebrae V which surround and protect the spinal cord S.
- the device 200 is shown extending longitudinally through the foramens of each vertebrae V.
- the device is shown extending longitudinally through the foramens of each vertebrae V.
- Fig. 8 provides a cross-sectional view of the device 200 of Fig. 7 showing the device 200 positioned against a DRG. It may be appreciated that the device 200 may be positioned at a variety of locations adjacent or near the DRG while maintaining the longitudinal orientation.
- Figs. 9A-9C illustrate embodiments of devices 200 of the present invention that have electrodes 210 at various spacings and/or allow adjustment of the spacing between activated electrodes.
- Fig. 9A illustrates an embodiment of a device 200 comprising an elongate body 201 having at least two electrodes 210 disposed thereon. The elongate body
- the 201 has a longitudinal axis 203, and in this embodiment, the at least two electrodes 210 are disposed along the longitudinal axis 203.
- the at least two electrodes 210 have a fixed spacing along the longitudinal axis 203 according to the distance between spinal levels or the longitudinal distance between DRGs along the spinal column (based on the average patient population or based on specific anatomies).
- Distances X & Y illustrate the distances between the at least two electrodes 210. Distances X & Y may be the same or different from each other. The distances are such that each electrode 210 is within range of a target DRG, when the device 200 is aligned according to Fig. 6, and each electrode 210 is disposed within a distance which allows selective stimulation thereto.
- Fig. 9B illustrates an embodiment of a device 200 comprising an elongate body 201 having a plurality of electrodes 210 disposed thereon.
- the electrodes 210 are positioned so that two or more electrodes 210 grouped at spaced distances.
- Fig. 9B illustrates a first group of electrodes 210a disposed near a distal end of the elongate body 201, a second group of electrodes 210b disposed midway along the elongate body 201, and a third group of electrodes 210c disposed near a proximal end of the elongate body 201.
- each group 210a, 210b, 210c includes three electrodes disposed along the longitudinal axis 203.
- the electrode 210 within each group 210a, 210b, 210c that aligns most closely with the target DRG of that group or that provides the most desirable therapeutic effects may be utilized (as indicated by shading).
- the remaining two electrodes in the group will not receive stimulating energy. It may be appreciated that in some embodiments, more than one electrode 210 may be used within each group if such use provides a more desirable result.
- the distances X & Y between the stimulating electrodes can thus be varied to accommodate differences in DRG spacing for individual patients.
- the electrodes 210 which receive stimulation energy can be changed without altering the position of the elongate body 201.
- the DRGs can be retargeted by modifying the distances X & Y.
- Fig. 9C also illustrates an embodiment of a device 200 comprising an elongate body 201 having a plurality of electrodes 210 disposed thereon along a longitudinal axis 203.
- the electrodes 210 are positioned substantially continuously along the device 200. Electrodes are selectively utilized (as indicated by shading) to adjust X & Y to accommodate differences in DRG spacing for individual patients. Any number of electrodes may be present in any arrangement. Also, any number of spaced distances may be present, such as to create distances such as X & Y & Z, etc.
- Figs. lOA-lOC illustrate an embodiment of a grouped lead device 200 comprising a telescoping shaft 220 which allows adjustable positioning of the electrodes 210.
- the telescoping shaft 220 comprises a first structure or elongate tubular body 220a and a second structure or elongate tubular body 220b.
- Each tubular body 220a, 220b has a proximal end, a distal end and a lumen therethrough.
- Each tubular body 220a, 220b also includes at least one electrode disposed thereon, typically near its distal end.
- the second elongate tubular body is advanceable through the lumen of the first elongate tubular body 220a so that its distal end, and electrode 210 disposed thereon, extends beyond the distal end of the first elongate tubular body 220a.
- the shaft 220 also includes an inner structure 220c having a distal end and, wherein the inner structure is advanceable through the lumen of the second tubular body 220b so that its distal end extends beyond the distal end of the second elongate tubular body 220b.
- the inner structure 220c also has at least one electrode 210 disposed thereon, so that the electrode 210 is exposed beyond the distal end of the second elongate tubular body 220b.
- all three electrodes 210 may be simultaneously exposed and utilized for stimulating tissue.
- the distances X & Y between the electrodes 210 can be adjusted by moving the tubular bodies 220a, 220b and inner structure 220c relative to each other, such as by extension and retraction.
- the telescoping structures 220a, 220b, 220c may be comprised of various materials, preferably a flexible polymer.
- the inner structure 220c has a strength member extending between its proximal and distal ends so as to provide sufficient strength to allow tunneling of the device 200.
- the structures 220a, 220b, 220c may be supported by a stylet during placement.
- the telescoping structures 220a, 220b, 220c may have various cross-sectional shapes, including shapes that resist rotation.
- Fig. 1OB illustrates an example of a rotation resisting shape, a flat shape which may be oval or oblong, rectangular, polygonal, etc.
- the flatness of the shape resists rotation of, for example, the inner structure 220c within the second tubular body 220b or the second tubular body 220b within the first tubular body 220a.
- Such resistance rotation ensures that the electrodes maintain rotational orientation to each other, such as longitudinal alignment.
- the cross-sectional shape may be thick (Fig. 10C) which may be circular, square, rectangular, polygonal, etc. When the shape is circular, the rotational orientation of the electrodes can be adjusted.
- Electrodes 210 may be easier to attach to flat designs, conserve energy, etc. Flat designs may also provide easier determination of orientation of the electrodes 210, as describe above, during delivery and implantation.
- the cross-sectional shape may also be chosen based on location in anatomy where the device is to be placed.
- Fig. 11 illustrates the telescoping shaft 220 positioned within the epidural space so that the electrodes 210 are near DRGs on multiple spinal levels. This may be achieved by advancing or retracting the telescoping structures 220a, 220b, 220c so that the electrodes 210 substantially align with the DRGs.
- Conductive wires electrically connected to the electrodes 210 extend out the proximal end to an IPG.
- the above embodiments describe devices, systems and methods that directly stimulate the dorsal root, particularly the dorsal root ganglion (DRG), while minimizing or excluding undesired stimulation of other anatomies.
- this allows access to multiple levels of the spinal column with the use of a single device. This reduces procedure complexity, time and recovery since a single access path is created rather than individual access paths to each level of the spinal column.
- These embodiments also have a reduced number of paths to an IPG. It may be appreciated that the devices, systems and methods of the present invention may also be used to stimulate other portions of the spinal anatomy or other anatomies.
- Fig. 12 illustrates a device 200 such as or similar to the device of Fig. 9C wherein the device 200 comprises an elongate body 201 having a plurality of electrodes 210 disposed substantially continuously thereon along a longitudinal axis 203.
- the device 200 is advanced through the epidural space and at least a portion of the device 200 is advanced laterally toward a single DRG. In some instances, this includes advancement through a foramen.
- the device 200 is positioned so that at least one of the plurality of electrodes 210 is disposed on, near or about the DRG.
- the electrodes are then selectively utilized (as indicated by shading) so that the electrode(s) 210 which provide the most desirable result receive stimulation energy. The remaining electrodes receive a lower level or no stimulation energy.
- Fig. 13 illustrates a device 200 having a telescoping shaft 220 such as or similar to that of Fig. 1OA.
- the telescoping shaft 220 comprises a first structure or elongate tubular body 220a and a second structure or elongate tubular body 220b.
- Each tubular body 220a, 220b has a proximal end, a distal end and a lumen therethrough.
- Each tubular body 220a, 220b also includes at least one electrode disposed thereon, typically near its distal end.
- the second elongate tubular body is advanceable through the lumen of the first elongate tubular body 220a so that its distal end, and electrode 210 disposed thereon, extends beyond the distal end of the first elongate tubular body 220a.
- the shaft 220 also includes an inner structure 220c having a distal end and, wherein the inner structure is advanceable through the lumen of the second tubular body 220b so that its distal end extends beyond the distal end of the second elongate tubular body 220b.
- the inner structure 220c also has at least one electrode 210 disposed thereon, so that the electrode 210 is exposed beyond the distal end of the second elongate tubular body 220b. Thus, all three electrodes 210 may be simultaneously exposed and utilized for stimulating tissue.
- Fig. 13 shows the device 200 laterally approaching an individual DRG from outside of a spinal column.
- One or more of the first tubular body 220a, second tubular body 220b and inner structure 220c may be advanced or retracted so that at least one electrode 210 is disposed on, near or about the DRG.
- the electrodes are then selectively utilized (as indicated by shading) so that the electrode(s) 210 which provide the most desirable result receive stimulation energy.
- the remaining electrodes receive a lower level or no stimulation energy.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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AU2007329250A AU2007329250B2 (en) | 2006-12-06 | 2007-12-06 | Grouped leads for spinal stimulation |
CA002671575A CA2671575A1 (en) | 2006-12-06 | 2007-12-06 | Grouped leads for spinal stimulation |
JP2009540485A JP5433420B2 (en) | 2006-12-06 | 2007-12-06 | Collective lead for spinal cord stimulation |
EP07865338.3A EP2094350B1 (en) | 2006-12-06 | 2007-12-06 | Grouped leads for spinal stimulation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US87346406P | 2006-12-06 | 2006-12-06 | |
US60/873,464 | 2006-12-06 |
Publications (2)
Publication Number | Publication Date |
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WO2008070804A2 true WO2008070804A2 (en) | 2008-06-12 |
WO2008070804A3 WO2008070804A3 (en) | 2008-09-25 |
Family
ID=39493080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/086693 WO2008070804A2 (en) | 2006-12-06 | 2007-12-06 | Grouped leads for spinal stimulation |
Country Status (7)
Country | Link |
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US (1) | US20080147156A1 (en) |
EP (1) | EP2094350B1 (en) |
JP (2) | JP5433420B2 (en) |
CN (1) | CN101588839A (en) |
AU (1) | AU2007329250B2 (en) |
CA (1) | CA2671575A1 (en) |
WO (1) | WO2008070804A2 (en) |
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WO2013177145A1 (en) * | 2012-05-25 | 2013-11-28 | Boston Scientific Neuromodulation Corporation | Methods for stimulating the dorsal root ganglion with a lead having segmented electrodes |
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Also Published As
Publication number | Publication date |
---|---|
WO2008070804A3 (en) | 2008-09-25 |
JP2010512185A (en) | 2010-04-22 |
CA2671575A1 (en) | 2008-06-12 |
AU2007329250B2 (en) | 2012-03-15 |
EP2094350B1 (en) | 2018-06-13 |
JP5433420B2 (en) | 2014-03-05 |
JP5759519B2 (en) | 2015-08-05 |
CN101588839A (en) | 2009-11-25 |
JP2013240710A (en) | 2013-12-05 |
EP2094350A2 (en) | 2009-09-02 |
AU2007329250A1 (en) | 2008-06-12 |
EP2094350A4 (en) | 2010-07-14 |
US20080147156A1 (en) | 2008-06-19 |
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